MDM comes with a built-in full-text index replication based on JMS
topics.

Each MDM server instance maintains its own full-text indexes. To maintain consistent indexes
within the cluster, each change made on one node must be broadcasted to the other nodes so
that each node applies modifications to its own indexes. This is called full-text index
replication.

Suppose there are several MDM server nodes in a cluster. If a change affecting a full-text
index needs to be performed on one node, the node will perform this change locally and then
send a JMS message on a topic. When receiving the message, all the other nodes will perform
the same change locally to ensure index consistency.

This feature is enabled as soon as an MDM data source has full-text capability enabled and
system.cluster=true is added under the System Settings
section in the file <$INSTALLDIR>/conf/mdm.conf.